CVE-2021-41531

moderate-risk
Published 2021-09-21

NLnet Labs Routinator prior to 0.10.0 produces invalid RTR payload if an RPKI CA uses too large values in the max-length parameter in a ROA. This will lead to RTR clients such as routers to reject the RPKI data set, effectively disabling Route Origin Validation.

Do I need to act?

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0.35% chance of exploitation
EPSS score — low exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
7
CVSS 7.5/10 High
NETWORK / LOW complexity

Affected Products (1)

Routinator

Affected Vendors

Nlnetlabs

References (2)

Vendor Advisory https://www.nlnetlabs.nl/downloads/routinator/CVE-2021-41531.txt
Vendor Advisory https://www.nlnetlabs.nl/downloads/routinator/CVE-2021-41531.txt
32
/ 100
moderate-risk
Severity 26/34 · High
Exploitability 1/34 · Minimal
Exposure 5/34 · Minimal